GSXR 1000 Questions (answers and tricks)

[al]

Well I finally got my new motor and have some questions. It’s an 02' GSXR 1000 and I need to find out if the water flow is the same as I had before, it looks like it but want to be sure. On the ZX-11 it was out on the right side and in on the left side is it the same for the GSXR? Are you guys using hydraulic clutch slave cylinders? I have a hydraulic clutch and am wondering what slave's you are using and if there is a conversion kit of some sort to adapt the slave to the engine. Pictures would be great I am a visual person. And how did everyone hook up fuel line to the FI? Is there someone who makes that type of connectors or did you replace the inlet on the fuel rail with something else? And do you have to run braided line on this engine or can you get away with something else. If you have to use braided what size? I am not sure the rubber line would hold up to 50psi. Also for the return line I was thinking of using a T fitting before the fuel pump, will this work? Or am I going to have a bung welded on the tank? Thanks in advance for the input I am trying to get this done before Presidents weekend for a trip to the desert. I would like to see pics of motor mounts people have for the Short Sand Cars for this engine. I have sent my harness to Jeff Barker for modification http://www.esdca.org/barker/ and should have it early next week

[dirtguy]

The only thinig I can offer advice is the F.I.
1) Use the braided. Braze the approiate steel fitting on the original steel fitting. Most likely a banjo fitting.
Although there is specific EFI rubber hose that is stronger. 5/16.
2) Have a bung welded on the tank for return. Or return it to a surge tank between the tank and the fuel pump.

Which hose goes to the pump. This is the cold side hose or water out of the rad.

DG

[al]

DG,

What do you mean by surge tank? I plan on running rubber line to the fuel pump and then braided or something else from pump to fuel rail. Would a T fitting in the low side of the fuel line not work? The routing of the coolant lines is the same thanks.

The pics are of the inlet for the fuel rail. does anyone have any idea's?

[Trently]

i'm not sure but that connector looks like a GM fuel line fitting.
General Motors (Cadillac and Chev) use a simillar line on 95 and up cars and trucks. You can special order both a repair kit or a complete assembly. Or check a wrecking yard, may just work who knows?

[al]

Trently,

I am trying to go to braided lines or something that will thread into a fuel pump. I will check on the GM lines mabey it will be what I will be able to use.

Does the Busa or any other bikes have the same type of fittings that have had to change over to something else?

[dirtguy]

I'd braze a universal fitting (-6 AN), instead of trying to use a junkyard fitting that you can't replace easily. Unless you want to carry a spare for every fitting on your car.

A surge tank is a vessel on the inlet side of the fuel pump to supply a clean undisturbed supply of fuel to the pump. The "T" isn't a great idea because it recircs the fuel and it gets hotter and hotter as it recircs. And it might bubble and cavitate the pump.

DG

[rowycoracing]

If you carefully trim away the molded hose on the stock fuel fitting that connects onto the fuel rail (the one that that is shown in your second picture) you will find that that stock fuel rail fitting has a barbed hose fitting on it. I used Earl's braided line and just sealed and clamped it onto that barb and it has worked fine for a long time. I missed whatpump you are going to use. If you are going with a stock pump you don't need (or want) a return line. Tim

[al]

Tim,

I see that it had a barb but I was thinking of using the other end and just cut the hose and put a barb in the hose. I didn't think of doing it that way. I think I am going to use a pump from autozone the E2000, alot of the dwarf car guys use them and they say it puts out 50psi. Is there a return line for the engine? By looking at it there is a rubber hose that T's off in front of the injectors is that not used on the bike with the stock pump? Or is it just an overflow like on a carb if it is over pressured? Thanks for the help.

[rowycoracing]

You're beyond my personal level of expertise on the fuel pump and return line questions. I can only tell you what I have been told by a local guy who professionally builds race bikes and race cars using these engines. He said that on most of the current fuel injected bikes the computer controls the fuel rail pressure by controlling the voltage to the fuel pump. So he told me that for maximum performance at all throttle positions I should stay with the stock pump if I could and keep it wired into the computer. I asked about the dwarf car set ups that use an after market pump wired into a separate circuit and he told me that those are mostly alcohol conversions (and thus need a much higher flow rate that the stock pump can provide) and are designed to run prettty much wide open so they don't need the variable fuel rail pressure as much. I'm not sure how right any of that is but I decided to just follow his advice. As far as the return line goes all I can say is that on my 2 GSXR 600 engines (2002 and 2003 models) and my CBR 1000rr engine (2005 model) the stock pump mounts inside the tank and has an internal fuel relief. That's not much hard factual info I know but I hope maybe it helps a bit in terms of what follow up questions you might ask an expert? Tim

[al]

Thanks Tim.

Any one else know anything about return lines on the engine? If there are any? I have no experience with this engine so any help would help.